darkcomet | 93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1

General

Target

93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
Size

3.8MB
MD5

3c37f7cc15bbb4a34c18f4b4845164b0
SHA1

8e8ffe5af15853a72989ec9ca095ac54338ebe8a
SHA256

93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1
SHA512

6944821efe4eea5e5628c7a99cf9fe02f4159a975766649c534dd8438be818eb2fc09bc2015678dcfea8aaa6b684c29b6fb1b3146271a3ea5fa17cd210987b3f
SSDEEP

98304:3i4hTLOMtHDMlANqnfVGPyhcMYg4lSiSLCQrdGLcjFjj/eWKS5h7EleIljztU/qx:3i4hTLOMtHDMlANqnfVGPyhcMYg4lSiD

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

mcsft.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate mcsft.exe
Executes dropped EXE 2 IoCs

Processes:

mcsft.exemcsft.exe

pid process

2720 mcsft.exe
2756 mcsft.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	mcsft.exe

pid	process
2720	mcsft.exe
2756	mcsft.exe

Loads dropped DLL 6 IoCs

Processes:

93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exemcsft.exe

pid	process
1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
2720	mcsft.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoft = "C:\\Users\\Admin\\AppData\\Roaming\\mcsft.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

mcsft.exe

description pid process target process

PID 2720 set thread context of 2756 2720 mcsft.exe mcsft.exe

description	pid	process	target process
PID 2720 set thread context of 2756	2720	mcsft.exe	mcsft.exe

UPX packed file 27 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1680-2-0x0000000000400000-0x00000000007C9000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\mcsft.exe	upx
behavioral1/memory/1680-44-0x0000000000400000-0x00000000007C9000-memory.dmp	upx
behavioral1/memory/2720-49-0x0000000000400000-0x00000000007C9000-memory.dmp	upx
behavioral1/memory/2756-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2720-54-0x0000000000400000-0x00000000007C9000-memory.dmp	upx
behavioral1/memory/2756-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2756-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

mcsft.exe93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.execmd.exereg.exemcsft.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

mcsft.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	mcsft.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

mcsft.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier mcsft.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	mcsft.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

mcsft.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2756	mcsft.exe
Token: SeSecurityPrivilege	2756	mcsft.exe
Token: SeTakeOwnershipPrivilege	2756	mcsft.exe
Token: SeLoadDriverPrivilege	2756	mcsft.exe
Token: SeSystemProfilePrivilege	2756	mcsft.exe
Token: SeSystemtimePrivilege	2756	mcsft.exe
Token: SeProfSingleProcessPrivilege	2756	mcsft.exe
Token: SeIncBasePriorityPrivilege	2756	mcsft.exe
Token: SeCreatePagefilePrivilege	2756	mcsft.exe
Token: SeBackupPrivilege	2756	mcsft.exe
Token: SeRestorePrivilege	2756	mcsft.exe
Token: SeShutdownPrivilege	2756	mcsft.exe
Token: SeDebugPrivilege	2756	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2756	mcsft.exe
Token: SeChangeNotifyPrivilege	2756	mcsft.exe
Token: SeRemoteShutdownPrivilege	2756	mcsft.exe
Token: SeUndockPrivilege	2756	mcsft.exe
Token: SeManageVolumePrivilege	2756	mcsft.exe
Token: SeImpersonatePrivilege	2756	mcsft.exe
Token: SeCreateGlobalPrivilege	2756	mcsft.exe
Token: 33	2756	mcsft.exe
Token: 34	2756	mcsft.exe
Token: 35	2756	mcsft.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exemcsft.exemcsft.exe

pid process

1680 93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
2720 mcsft.exe
2756 mcsft.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.execmd.exemcsft.exe

description	pid	process	target process
PID 1680 wrote to memory of 1044	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	cmd.exe
PID 1680 wrote to memory of 1044	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	cmd.exe
PID 1680 wrote to memory of 1044	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	cmd.exe
PID 1680 wrote to memory of 1044	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	cmd.exe
PID 1044 wrote to memory of 2984	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 2984	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 2984	1044	cmd.exe	reg.exe
PID 1044 wrote to memory of 2984	1044	cmd.exe	reg.exe
PID 1680 wrote to memory of 2720	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	mcsft.exe
PID 1680 wrote to memory of 2720	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	mcsft.exe
PID 1680 wrote to memory of 2720	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	mcsft.exe
PID 1680 wrote to memory of 2720	1680	93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe
PID 2720 wrote to memory of 2756	2720	mcsft.exe	mcsft.exe

C:\Users\Admin\AppData\Local\Temp\93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe
"C:\Users\Admin\AppData\Local\Temp\93fddc0c9455e00ab778d32783286de472112cd7e7eeea3ed807dab6a6b06ac1N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\vLGaP.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1044
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\mcsft.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2984
- C:\Users\Admin\AppData\Roaming\mcsft.exe
  "C:\Users\Admin\AppData\Roaming\mcsft.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\vLGaP.bat

Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

Download Submit
C:\Users\Admin\AppData\Roaming\mcsft.exe

Filesize
3.8MB

MD5
bfcc0af20f61ae2c7521b356a776f077

SHA1
69685771b8941a6db0576dc722565b227339ff2d

SHA256
12d2fe3eed3b47ae6c3ce4340ede0e958c77d7a95d677d2996bfda139e194037

SHA512
6b4db3c8ef7216667b655ef861c213f2168c4c102f48648a6ca6e74ab7dc3c800894124f2318bb5ac610a2f458e082277a55b85d8da3dc7b403f974528ee0a2c

Download Submit
memory/1680-44-0x0000000000400000-0x00000000007C9000-memory.dmp

Filesize
3.8MB

Download
memory/1680-43-0x0000000003080000-0x0000000003449000-memory.dmp

Filesize
3.8MB

Download
memory/1680-2-0x0000000000400000-0x00000000007C9000-memory.dmp

Filesize
3.8MB

Download
memory/2720-54-0x0000000000400000-0x00000000007C9000-memory.dmp

Filesize
3.8MB

Download
memory/2720-49-0x0000000000400000-0x00000000007C9000-memory.dmp

Filesize
3.8MB

Download
memory/2720-63-0x0000000002B60000-0x0000000002F29000-memory.dmp

Filesize
3.8MB

Download
memory/2720-52-0x0000000002B60000-0x0000000002F29000-memory.dmp

Filesize
3.8MB

Download
memory/2756-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-65-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-50-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-66-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2756-75-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads